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(organic chemistry)
C6H4(OH)2 Sweet-tasting, white, toxic crystals; soluble in water, alcohol, ether, benzene, and glycerol; melts at 111°C; used for resins, dyes, pharmaceuticals, and adhesives, and as a chemical intermediate. Also known as resorcin.



(also resorcin, m-dihydroxybenzene), colorless crystals with a sweetish taste that are readily soluble in water, alcohol, and ether. Resorcinol has a melting point of 110.8°C and a boiling point of 280.8°C.

Resorcinol is one of the simplest diatomic phenols, comparable to hydroquinone and pyrocatechol. It is produced industrially usually by alkaline fusion of m-benzenedisulfonic acid. It is used in the manufacture of resorcinol-aldehyde resins and azo dyes—for example, resorcinol yellow is obtained by the interaction of resorcinol with diazotized sulfanilic acid. Fluorescein, stabilizers, and plastifiers of macromolecular compounds, as well as explosives and medicinal preparations such as 4-hexylresorcinol (an anthelmintic), are also manufactured from resorcinol.

In analytical chemistry resorcinol is used to make colorimet-ric determinations of furfural, lignin, sugars, and elements such as zinc and lead. In medicine it is used in unguents and solutions to treat skin diseases.

References in periodicals archive ?
Flavonoids (rutin and myricetin) and alkyl resorcinols (5-(Z-nonadec-14-enyl)resorcinol and demethylbe lamcandaquinone B) are suggested to play a major part in these cardiovascular protective effects.
Autoxidation of both resorcinols in potassium hydroxide solution reveals dimeric mono- and diquinone (Fig.
The aim of this study was to investigate the chemistry behind the disappearance of water-soluble phenols and particularly resorcinols from retorted kukersite semi-coke.
In this study the aerobic biodegradability of phenol, resorcinol and 5-methylresorcinol by the activated sludge taken from the Kohtla-Jarve WWTP was investigated.
It is worth to mention that in a previous study [15] about 25-43% of thOD was consumed by activated sludge during the short-term measurements, showing the highest value for resorcinol.
The original process for making the primer, hydroxymethylated resorcinol (HMR), required all the ingredients to be mixed on site at one time and the primer to be reacted for 3 hours before it could be used.
In the n-HMR process, a novolak oligomer mixture is made from resorcinol and formaldehyde and then converted to the n-HMR formulation by adding more formaldehyde.
Co-Condensation of Methylolphenols with Resorcinols
Co-condensation of methylolphenols with resorcinols was practically the only reaction observed under the conditions used.
4], who also showed that monobasic phenols were more efficiently removed than resorcinols: the concentration of resorcinols in the effluent remained even as high as 35-40 mg/l.
The isolated compound presented cytotoxic activity in the in vitro assay; from these results and the activities of other 5-alkyl resorcinol reported previously (Kozubek, 1999) we could infer that it may have some kind of antitumoral activity.
phenol, resorcinol, 5-methylresorcinol, o- and p-cresol at concentrations from 0.